/*
 * Copyright 2011 Sven Buschbeck.
 * 
 * This file is part of the ActiveObjects library.
 *
 *  ActiveObjects is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  ActiveObjects is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with Foobar.  If not, see <http://www.gnu.org/licenses/>.
 */
package net.svenbuschbeck.gwt.ao.client.events;

import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.event.shared.HasHandlers;

/**
 * A widget that implements this interface is a public source of
 * {@link ValueAddedEvent} events.
 * 
 * @param <T>
 *            the value about to be changed
 */
public interface HasValueAddedHandlers<T> extends HasHandlers {

	/**
	 * Adds a {@link ValueChangeEvent} handler.
	 * 
	 * @param handler
	 *            the handler
	 * @return the registration for the event
	 */
	HandlerRegistration addValueAddedHandler(ValueAddedHandler<T> handler);
}
